Tubular burner



A TTORNE YS R; T H U RM TUBULAR BURNER original Filed not; 15, 1925 NN,I .24

RIIIARDTHURM, oF SAGINAW, MICHIGAN,

Patented 13, 19539 -ASSIG'NOR T0 BAKER PERKINS COMPANY,

INCORPORATED, OF SAGINAW, MICHIGAN, A CORPORATION OF NEW YORK TUBULARBURNER Original application led October 15, 1925, Serial No. 62,511.

31, 1928. Serial No. 250,817.`

The invention relates to burners for illuminating gas, producer gas,oils and similar fuels; and it pertains particularly to burners of thelongctubular type which are employed for burning mixtures of Water gas,vaporized gaseous fuels and air in atmospheres whichV are substantiallyfree from oxygen, such, for example, as baking ovens.

When the ordinary long tubular type of burner is located so that thecombustion at its outlet takes place in a more or less conned space inanatmosphere that is substantially free from or at least deficient inoxygen and raised to a comparativelyi high temperature, there isliability to objectionable and somewhat dangerous backfiring and ex`plosions.

The principal object of the present invention is to provide a burner soconstructed as to prevent such backiiring and explosions; and to insurea continuous and substantially uniform combustion throughout the lengthof the burner. l

p With these and other objects'in View, the invention lcomprisesthevnovel and improved features, constructions and'combination of partshereinafter described and particularly pointed out in the claims, theadvantages of which will be clearly understood and appreciated by thoseskilled in the art.

This application is a divisional applicationbased upon certainsubject-matter contained in a prior application, Serial No. 62,511,filed VOctober 15, 1925, by Richard Thurm and Eugene Oscar Engels.

The invention will be clearlyCundrstood from the accompanyingdrawings'illustrating the invention. in its preferred forms and vthefollowing detailed description of the tion showing one means by whichthe discharge of fuel from the burner is controlled; Figures 6 and 7 arehorizontal sectional views showing different modified forms of fueldischarge controlling means; and

Figures 8 and 9 are views in side elevation Divided andthis applicationiiled January showing still further modified formsof dis-u y chargecontrolling means.

In the illustrated embodiment of the invention,l the burner includes asuitable fuel chamber to which combustible fuel is suppliedfrom asuitable conduit, which preferably extends substantially throughout thelength of the fuel chamber. supplied with combustible fuel from asuitable fuel main to which the fuel is supplied from a mixing deviceand which, in turn, has connection with sultable means for supplying thedifferent element-s of which the fuel is composed. From the fuelchamber, the fuel is discharged and burned at the point of discharge.

In the accompanying drawings, the burner is designated by the referencecharacter 10 and as shown in Figure 2, said burner includes a chamberwhich consists of atubular member 19 substantially circular incrosssect-ional form. This tubular member 19 is provided with anelongated slot 21, the length of which is determined by the length ofthe flame desired and which, in the present instance, is shown asextending throughout the major portion of the length of said tubularmember.

llnthis type of burner, a conduit-20 is employed Aand this conduitextends throughout substantially the entire length of the chamber formedbythe tubular member 19, as indicated by dotted lines in Figure 1. Thisconduit 20 is'semi-circular in cross-section and as shown in Figure 2,is located in the lower 'portion of the tubular member 14 with its planewall positioned upwardly. Thls construction provides a fuel chamber 25in the tubular member 19. Suitable discharge openingssuch, for example,as the perforations 26 are provided in the straight wall'of the consduit 20 and these dischargepopenings serve to permit the fuel to passfrom the conduit 20 into the fuel chamber 25 in the tubular mem# ber 19.By this cLonstruction-,a uniform presvsure of fuel is maintained inthechamber 25.

Fuel is supplied to the conduit 20 by-means of a suitable pipe 11controlled by a valve 13 and connected tota fuel main 12 for supplyingcombustiblefuel The fuel is supplied to the fuel main 1 2 from asuitable mixing device 14 to which the elements of the .fuel are-supplied separately in anys desired member 19 throughthe lelongatedslot 21 and as the fuel issues therefrom, it is ignited or burned toprovide the flame of the burner.

The tubular lmember 19 is provided with suitable means constructed 'toform a plurality through which the fuel v.passes in its of relativelylong passageways charge 4 from c member 19. l

A suitable structure is positioned within the elongated slot 21 tosecure this result. As shown in Figures 3, 4 and5, this structurecomprises two relatively long plates of greatthe chamberl ofthe tubularer width-than thickness whichare adapted to 4be retained in theelongated slot 21y with their adjacent side faces in contact with eachother( These two plates are designated by the refer-- ence characters 22and 29 in the accompanying drawings, and as will be noted from Figure 3,the adjacent faces-,of these plates i are transversely grooved asindicated at 31 and 32 respectively.; It willbe noted thatthetransversely-'extending' grooves of each of the plates 22 and 29 arespaced wit re.-

- spec't to one another and further tha V'the grooves 31 inthe plate 22are of a smaller p transverse dimension than the grooves 32 of ousmixture is discharged from the tubular member in a plurality ofndividualjets.

the plate 29, and consequently the intervening" spaces between thegrooves 31 of the p1ate`22will be wider than that betweenthe grooves 32of theplate 29.`l I Y Asheretofore stated, hese plates are posiexample,rivets 46.

The groovedjplates 22y and 29-when thus secured together, and securedwithin the slot 21 n of the tubular member 19, provide a series'ofchannels or passages through which the gase- Thechanneled structure ispositioned in the elongated slot 121 and ,is retainedin position thereinbythe side edges of the slot whichare caused -to engage the outer facesi, of the channeled structure and clamp the disversely of the tubularmember 19, which bolts are provided with nuts 28, which, when tightenedon their respective bolts, cause a contraction of the tubular member 19and thus results in-a clamping of the channeled structure withintheelongated slot 21.

Additional securing means for the channeled structure may be employedand as shown in Figure 3, this additional means may com rise suitablevclamping members such as 4 secured to the outer face ofthe tubularmember 19 at points between its ends and end plates .48 which latterconform in shape to the tubular member and serve to prevent the escapeof gas around the ends ofthe channeled structure.l As shown in Figure3,"t his structure is sli htly shorter than the length of the .elongateslot to allow forexpansion of the same during operation of theburner. X

'In Figure 6 is 'shown a slightly modified form of channeled structure,1n which there with its-grooved face` engaging. the smooth face of theplate 33. These plates 33 and 34 may be attached together land secured lwithin the elongated slot 21 and tubular member 19 in the same manner asdescribed in the form of the invention 'shown in Figure 2.`

In Figure 7, a still further modified form.

of the invention is lshown and in this form a plate 40 is rovided in itsopposite sides with a plurality of transversely-extending grooves, the'grooves of one side being offset or staggered with respect' to those ofthe other si e. forming the channeled structure, this plate 40 issecured between two ,plates 37 and 38, each having a smooth faceengaging the .plate 40,' this plate together i with the grooves `of theplate 40 forming a plurality offchannels. rllhis entire structure issecured in the elon ated slot 21 of the tubular member A19 in t e samemanner as in n the other forms of the invention. ,This type tioned withtheir grooved faces adjacent and,

the plates may be retained in this position by v a plurality offastening meanSQSucha'S, for'.

In the further modied form of the in-- vention shown in Figure 8, aplate 41 is provided with a plurality of diagonally-extending grooves42. In the preferred construction, this plate is assembled` with asecond plateof corresponding shape and-size hav- "z ing a smooth face,the smooth face of the second plate being placed in'contactwith thegrooved face of the 'plate 41. These vtwo plates are inserted in theslot 21 of the tubular of channels through which thegaseous mix- -member19'and-are secured in position therey l A in. The grooves 42 thusprovide a plurality same `w1th1n the slot. This result is obi n Itainedby means -ofbolts extending trans- Figure 9 shows a form of theinvention similar to that shown in Figure 8. In the form of theinvention shown in Figure 9, the

plate 43 is provided with two sets of diagonal- It is to be understoodthat a plurality of I these burners are employed in a baking oven, andas shown in Figure 1, the burners are supported at their ends in thewalls 15 and 16 and between their ends, the burners maybe supported bysuitable supportssuch as N17 The invention is not limited to theparticular construction and arrangement of parts of the illustratedembodiments of the invention, but may be embodied in other forms withinthe scope of the claims. y

Having. explained the nature and object of the invention and havingspecifically described the structure embodying the invention in itspreferred form, what is claimed is: 1. A burner comprising a relativelylong tubular member provided with a slot extend- `ing longitudinallythereof, and a plurality of relatively long narrow Walls placed face toface and extending along said slot, each of said walls having a seriesof spaced grooves extending transversely thereof to provide channelsthrough which the fuel is discharged from the tubular member,

opposite the spaces betweenthe grooves of the other wall.

2. A burner comprising a relatively long tubular member provided with aslot extending longitudinally thereof, and a plurality of charged fromthe .tubular member, the

grooves in one wall being wider than the grooves in the other wall, andthe grooves in each wall being opposite the spaces betwen the grooves inthe other wall.

3. A burner comprising a relatively long tubular member provided with aslot extending longitudinally thereof, and a plurality of relativelylong narrow walls placed face to face and extendingalong said slot, oneof said walls having a series of grooves extending transversely thereofand the other wall having a substantially smooth surface opposite thegrooves to 4provide channels throu h which thefuel is discharged fromthe-tu ular member. I

Signed atSaginaw, Michigan, this 25th day of January, 1928.

' RICHARD TM.

said grooves being .so arranged that the grooves of each wall are

